Light Theremin
4 Voice Passive Mixer
Pulse Wave
Atari Punk Jasmin
Creative Amp
Contact MicContactMic
PanAZ Bass

Synth (4 voice - Inverted Schimitt)


Simple schematics for each voice:
40106 inverted schmitt trigger/40106 inverted schmitt trigger

This chip contains 6 individual Schmitt triggers. A Schmitt trigger is a comparator circuit that incorporates positive feedback. What this means is that when a high signal (positive voltage defined as '1') is applied to the input pin, the output pin generates a low signal (ground voltage defined as '0). This simple circuit can be connected to a resistor/capacitor pair to rapidly turn on an off. When the frequency of this on/off conversion is in the audible range, we hear a square-wave tone.